/**
 * Copyright (c) 2006-2015, JGraph Ltd
 * Copyright (c) 2006-2015, Gaudenz Alder
 */
/**
 * Class: mxSwimlane
 *
 * Extends <mxShape> to implement a swimlane shape. This shape is registered
 * under <mxConstants.SHAPE_SWIMLANE> in <mxCellRenderer>. Use the
 * <mxConstants.STYLE_STYLE_STARTSIZE> to define the size of the title
 * region, <mxConstants.STYLE_SWIMLANE_FILLCOLOR> for the content area fill,
 * <mxConstants.STYLE_SEPARATORCOLOR> to draw an additional vertical separator
 * and <mxConstants.STYLE_SWIMLANE_LINE> to hide the line between the title
 * region and the content area. The <mxConstants.STYLE_HORIZONTAL> affects
 * the orientation of this shape, not only its label.
 *
 * Constructor: mxSwimlane
 *
 * Constructs a new swimlane shape.
 *
 * Parameters:
 *
 * bounds - <mxRectangle> that defines the bounds. This is stored in
 * <mxShape.bounds>.
 * fill - String that defines the fill color. This is stored in <fill>.
 * stroke - String that defines the stroke color. This is stored in <stroke>.
 * strokewidth - Optional integer that defines the stroke width. Default is
 * 1. This is stored in <strokewidth>.
 */
function mxSwimlane(bounds, fill, stroke, strokewidth)
{
    mxShape.call(this);
    this.bounds = bounds;
    this.fill = fill;
    this.stroke = stroke;
    this.strokewidth = (strokewidth != null) ? strokewidth : 1;
};

/**
 * Extends mxShape.
 */
mxUtils.extend(mxSwimlane, mxShape);

/**
 * Variable: imageSize
 *
 * Default imagewidth and imageheight if an image but no imagewidth
 * and imageheight are defined in the style. Value is 16.
 */
mxSwimlane.prototype.imageSize = 16;

/**
 * Function: isRoundable
 *
 * Adds roundable support.
 */
mxSwimlane.prototype.isRoundable = function(c, x, y, w, h)
{
    return true;
};

/**
 * Function: getGradientBounds
 *
 * Returns the bounding box for the gradient box for this shape.
 */
mxSwimlane.prototype.getTitleSize = function()
{
    return Math.max(0, mxUtils.getValue(this.style, mxConstants.STYLE_STARTSIZE, mxConstants.DEFAULT_STARTSIZE));
};

/**
 * Function: getGradientBounds
 *
 * Returns the bounding box for the gradient box for this shape.
 */
mxSwimlane.prototype.getLabelBounds = function(rect)
{
    var start = this.getTitleSize();
    var bounds = new mxRectangle(rect.x, rect.y, rect.width, rect.height);
    var horizontal = this.isHorizontal();

    var flipH = mxUtils.getValue(this.style, mxConstants.STYLE_FLIPH, 0) == 1;
    var flipV = mxUtils.getValue(this.style, mxConstants.STYLE_FLIPV, 0) == 1;

    // East is default
    var shapeVertical = (this.direction == mxConstants.DIRECTION_NORTH ||
        this.direction == mxConstants.DIRECTION_SOUTH);
    var realHorizontal = horizontal == !shapeVertical;

    var realFlipH = !realHorizontal && flipH != (this.direction == mxConstants.DIRECTION_SOUTH ||
        this.direction == mxConstants.DIRECTION_WEST);
    var realFlipV = realHorizontal && flipV != (this.direction == mxConstants.DIRECTION_SOUTH ||
        this.direction == mxConstants.DIRECTION_WEST);

    // Shape is horizontal
    if (!shapeVertical)
    {
        var tmp = Math.min(bounds.height, start * this.scale);

        if (realFlipH || realFlipV)
        {
            bounds.y += bounds.height - tmp;
        }

        bounds.height = tmp;
    }
    else
    {
        var tmp = Math.min(bounds.width, start * this.scale);

        if (realFlipH || realFlipV)
        {
            bounds.x += bounds.width - tmp;
        }

        bounds.width = tmp;
    }

    return bounds;
};

/**
 * Function: getGradientBounds
 *
 * Returns the bounding box for the gradient box for this shape.
 */
mxSwimlane.prototype.getGradientBounds = function(c, x, y, w, h)
{
    var start = this.getTitleSize();

    if (this.isHorizontal())
    {
        start = Math.min(start, h);
        return new mxRectangle(x, y, w, start);
    }
    else
    {
        start = Math.min(start, w);
        return new mxRectangle(x, y, start, h);
    }
};

/**
 * Function: getArcSize
 *
 * Returns the arcsize for the swimlane.
 */
mxSwimlane.prototype.getArcSize = function(w, h, start)
{
    var f = mxUtils.getValue(this.style, mxConstants.STYLE_ARCSIZE, mxConstants.RECTANGLE_ROUNDING_FACTOR * 100) / 100;

    return start * f * 3;
};

/**
 * Function: paintVertexShape
 *
 * Paints the swimlane vertex shape.
 */
mxSwimlane.prototype.isHorizontal = function()
{
    return mxUtils.getValue(this.style, mxConstants.STYLE_HORIZONTAL, 1) == 1;
};

/**
 * Function: paintVertexShape
 *
 * Paints the swimlane vertex shape.
 */
mxSwimlane.prototype.paintVertexShape = function(c, x, y, w, h)
{
    var start = this.getTitleSize();
    var fill = mxUtils.getValue(this.style, mxConstants.STYLE_SWIMLANE_FILLCOLOR, mxConstants.NONE);
    var swimlaneLine = mxUtils.getValue(this.style, mxConstants.STYLE_SWIMLANE_LINE, 1) == 1;
    var r = 0;

    if (this.isHorizontal())
    {
        start = Math.min(start, h);
    }
    else
    {
        start = Math.min(start, w);
    }

    c.translate(x, y);

    if (!this.isRounded)
    {
        this.paintSwimlane(c, x, y, w, h, start, fill, swimlaneLine);
    }
    else
    {
        r = this.getArcSize(w, h, start);
        r = Math.min(((this.isHorizontal()) ? h : w) - start, Math.min(start, r));
        this.paintRoundedSwimlane(c, x, y, w, h, start, r, fill, swimlaneLine);
    }

    var sep = mxUtils.getValue(this.style, mxConstants.STYLE_SEPARATORCOLOR, mxConstants.NONE);
    this.paintSeparator(c, x, y, w, h, start, sep);

    if (this.image != null)
    {
        var bounds = this.getImageBounds(x, y, w, h);
        c.image(bounds.x - x, bounds.y - y, bounds.width, bounds.height,
            this.image, false, false, false);
    }

    if (this.glass)
    {
        c.setShadow(false);
        this.paintGlassEffect(c, 0, 0, w, start, r);
    }
};

/**
 * Function: paintSwimlane
 *
 * Paints the swimlane vertex shape.
 */
mxSwimlane.prototype.paintSwimlane = function(c, x, y, w, h, start, fill, swimlaneLine)
{
    c.begin();

    if (this.isHorizontal())
    {
        c.moveTo(0, start);
        c.lineTo(0, 0);
        c.lineTo(w, 0);
        c.lineTo(w, start);
        c.fillAndStroke();

        if (start < h)
        {
            if (fill == mxConstants.NONE)
            {
                c.pointerEvents = false;
            }
            else
            {
                c.setFillColor(fill);
            }

            c.begin();
            c.moveTo(0, start);
            c.lineTo(0, h);
            c.lineTo(w, h);
            c.lineTo(w, start);

            if (fill == mxConstants.NONE)
            {
                c.stroke();
            }
            else
            {
                c.fillAndStroke();
            }
        }
    }
    else
    {
        c.moveTo(start, 0);
        c.lineTo(0, 0);
        c.lineTo(0, h);
        c.lineTo(start, h);
        c.fillAndStroke();

        if (start < w)
        {
            if (fill == mxConstants.NONE)
            {
                c.pointerEvents = false;
            }
            else
            {
                c.setFillColor(fill);
            }

            c.begin();
            c.moveTo(start, 0);
            c.lineTo(w, 0);
            c.lineTo(w, h);
            c.lineTo(start, h);

            if (fill == mxConstants.NONE)
            {
                c.stroke();
            }
            else
            {
                c.fillAndStroke();
            }
        }
    }

    if (swimlaneLine)
    {
        this.paintDivider(c, x, y, w, h, start, fill == mxConstants.NONE);
    }
};

/**
 * Function: paintRoundedSwimlane
 *
 * Paints the swimlane vertex shape.
 */
mxSwimlane.prototype.paintRoundedSwimlane = function(c, x, y, w, h, start, r, fill, swimlaneLine)
{
    c.begin();

    if (this.isHorizontal())
    {
        c.moveTo(w, start);
        c.lineTo(w, r);
        c.quadTo(w, 0, w - Math.min(w / 2, r), 0);
        c.lineTo(Math.min(w / 2, r), 0);
        c.quadTo(0, 0, 0, r);
        c.lineTo(0, start);
        c.fillAndStroke();

        if (start < h)
        {
            if (fill == mxConstants.NONE)
            {
                c.pointerEvents = false;
            }
            else
            {
                c.setFillColor(fill);
            }

            c.begin();
            c.moveTo(0, start);
            c.lineTo(0, h - r);
            c.quadTo(0, h, Math.min(w / 2, r), h);
            c.lineTo(w - Math.min(w / 2, r), h);
            c.quadTo(w, h, w, h - r);
            c.lineTo(w, start);

            if (fill == mxConstants.NONE)
            {
                c.stroke();
            }
            else
            {
                c.fillAndStroke();
            }
        }
    }
    else
    {
        c.moveTo(start, 0);
        c.lineTo(r, 0);
        c.quadTo(0, 0, 0, Math.min(h / 2, r));
        c.lineTo(0, h - Math.min(h / 2, r));
        c.quadTo(0, h, r, h);
        c.lineTo(start, h);
        c.fillAndStroke();

        if (start < w)
        {
            if (fill == mxConstants.NONE)
            {
                c.pointerEvents = false;
            }
            else
            {
                c.setFillColor(fill);
            }

            c.begin();
            c.moveTo(start, h);
            c.lineTo(w - r, h);
            c.quadTo(w, h, w, h - Math.min(h / 2, r));
            c.lineTo(w, Math.min(h / 2, r));
            c.quadTo(w, 0, w - r, 0);
            c.lineTo(start, 0);

            if (fill == mxConstants.NONE)
            {
                c.stroke();
            }
            else
            {
                c.fillAndStroke();
            }
        }
    }

    if (swimlaneLine)
    {
        this.paintDivider(c, x, y, w, h, start, fill == mxConstants.NONE);
    }
};

/**
 * Function: paintDivider
 *
 * Paints the divider between swimlane title and content area.
 */
mxSwimlane.prototype.paintDivider = function(c, x, y, w, h, start, shadow)
{
    if (!shadow)
    {
        c.setShadow(false);
    }

    c.begin();

    if (this.isHorizontal())
    {
        c.moveTo(0, start);
        c.lineTo(w, start);
    }
    else
    {
        c.moveTo(start, 0);
        c.lineTo(start, h);
    }

    c.stroke();
};

/**
 * Function: paintSeparator
 *
 * Paints the vertical or horizontal separator line between swimlanes.
 */
mxSwimlane.prototype.paintSeparator = function(c, x, y, w, h, start, color)
{
    if (color != mxConstants.NONE)
    {
        c.setStrokeColor(color);
        c.setDashed(true);
        c.begin();

        if (this.isHorizontal())
        {
            c.moveTo(w, start);
            c.lineTo(w, h);
        }
        else
        {
            c.moveTo(start, 0);
            c.lineTo(w, 0);
        }

        c.stroke();
        c.setDashed(false);
    }
};

/**
 * Function: getImageBounds
 *
 * Paints the swimlane vertex shape.
 */
mxSwimlane.prototype.getImageBounds = function(x, y, w, h)
{
    if (this.isHorizontal())
    {
        return new mxRectangle(x + w - this.imageSize, y, this.imageSize, this.imageSize);
    }
    else
    {
        return new mxRectangle(x, y, this.imageSize, this.imageSize);
    }
};
